Show that 1/x^b-a +x^c-a +1/1+x ^a-b +x^c-b+ 1/1+x^b-c+x^a-c =1

1.	Show that 1/x^b-a +x^c-a +1/1+x ^a-b +x^c-b+ 1/1+x^b-c+x^a-c =1
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